r6a.12xlarge
Memory optimized · r6a series · AMD EPYC 7R13 Processor
- vCPU
- 48
- Memory
- 384 GiB
- Linux / hour
- $2.72
- Per month
- $1,987
- Per vCPU-hour
- $0.0567
- Per GiB-hour
- $0.00709
Analysis
The r6a.12xlarge is a memory optimized instance in the r6a series with 48 vCPUs and 384 GiB of memory on AMD EPYC 7R13 (up to 3.6 GHz), which makes it memory-heavy at 8 GiB of memory per vCPU.
It costs the same as the older r5a.12xlarge on AMD EPYC 7571, so the move up a generation is free. The newer r7a.12xlarge on AMD EPYC 9R14 is 34% dearer at $3.65/hour.
Running it in Mumbai instead of Frankfurt saves $1,144 a month per instance: $1.72/hour against $3.28/hour, a 91% spread. It is not offered in São Paulo, so plan around that if you need a presence there.
Within the same generation and size, the r6g.12xlarge on AWS Graviton2 costs $2.42/hour, 11% less ($221 a month), though switching means rebuilding software for arm64. The other variants are the r6gd.12xlarge at $2.76, the r6i.12xlarge at $3.02 and the r6id.12xlarge at $3.63.
At $2.72/hour on demand in US East (N. Virginia), about $1,987 a month, the r6a.12xlarge is one of the cheaper ways to buy memory optimized capacity: only 8% of the 385 current memory optimized types cost less per vCPU-hour than its $0.0567.
It is size 6 of 10 in the r6a series. Stepping up to the r6a.16xlarge gives 64 vCPUs and 512 GiB for $662 more a month. Dropping to the r6a.8xlarge saves $662 a month.
Price by region (USD per hour)
| Region | Linux | Windows | 1-yr RI | 3-yr RI | |
|---|---|---|---|---|---|
| N. Virginia us-east-1 | $2.72 | $4.93 | $1.80 | $1.23 | |
| Ohio us-east-2 | $2.72 | $4.93 | $1.80 | $1.23 | |
| Oregon us-west-2 | $2.72 | $4.93 | $1.80 | $1.23 | |
| Canada Central ca-central-1 | $2.98 | $5.19 | $1.98 | $1.35 | |
| Ireland eu-west-1 | $3.05 | $5.25 | $2.01 | $1.38 | |
| London eu-west-2 | $3.20 | $5.40 | $2.12 | $1.45 | |
| Frankfurt eu-central-1 | $3.28 | $5.49 | $2.17 | $1.49 | |
| Mumbai ap-south-1 | $1.72 | $3.92 | $1.13 | $0.7784 | |
| Singapore ap-southeast-1 | $3.28 | $5.49 | $2.17 | $1.49 | |
| Sydney ap-southeast-2 | $3.26 | $5.47 | $2.16 | $1.48 | |
| Tokyo ap-northeast-1 | $3.28 | $5.49 | $2.17 | $1.49 |
Shared tenancy, no pre-installed software. Reserved rates are standard, no upfront, per hour. Prices as of 2026-11-04.
Same shape, other types
| Type | vCPU | Memory | $/hour | vs r6a.12xlarge |
|---|---|---|---|---|
| r6g.12xlarge AWS Graviton2 Processor | 48 | 384 GiB | $2.42 | -11% |
| r7g.12xlarge AWS Graviton3 Processor | 48 | 384 GiB | $2.57 | -6% |
| r5a.12xlarge AMD EPYC 7571 | 48 | 384 GiB | $2.71 | -0% |
| r6gd.12xlarge AWS Graviton2 Processor | 48 | 384 GiB | $2.76 | +2% |
| r8g.12xlarge AWS Graviton4 Processor | 48 | 384 GiB | $2.83 | +4% |
| r5.12xlarge Intel Xeon Platinum 8175 | 48 | 384 GiB | $3.02 | +11% |
Cost calculator
Specs
| vCPU | 48 |
|---|---|
| Memory | 384 GiB (8.0 per vCPU) |
| Processor | AMD EPYC 7R13 Processor |
| Clock | 3.6 GHz |
| Storage | EBS only |
| Network | 18750 Megabit |
r6a sizes
| r6a.large | 2 vCPU | $0.1134 |
| r6a.xlarge | 4 vCPU | $0.2268 |
| r6a.2xlarge | 8 vCPU | $0.4536 |
| r6a.4xlarge | 16 vCPU | $0.9072 |
| r6a.8xlarge | 32 vCPU | $1.81 |
| r6a.12xlarge | 48 vCPU | $2.72 |
| r6a.16xlarge | 64 vCPU | $3.63 |
| r6a.24xlarge | 96 vCPU | $5.44 |
| r6a.32xlarge | 128 vCPU | $7.26 |
| r6a.48xlarge | 192 vCPU | $10.89 |